Proline Promass 84F, 84M
Hauser
7
Measuring ranges for high pressure fuel gases CNG for Promass M
!
Note!
For information about the other approvals
→
see corresponding certificate.
Operable flow range
Over 20 : 1 for verified device
Input signal
Status input (auxiliary input), HART:
U = 3 to 30 V DC, R
i
= 5 k
Ω
, galvanically isolated.
Configurable for: totalizer reset, positive zero return, error message reset, zero point adjustment start.
Status input (auxiliary input), MODBUS RS485:
U = 3 to 30 V DC, R
i
= 3 k
Ω
, galvanically isolated, switch level: ±3 to ±30 V DC, independent of polarity.
Configurable for: totalizer reset, positive zero return, error message reset, zero point adjustment start.
Output
Output signal
Current output:
Active/passive selectable, galvanically isolated, time constant selectable (0.05 to 100 s), full scale value
selectable, temperature coefficient: typically 0.005% o.r./°C, resolution: 0.5
μ
A
• Active: 0/4 to 20 mA, R
L
< 700
Ω
(for HART: R
L
≥
250
Ω
)
• Passive: 4 to 20 mA; supply voltage V
S
18 to 30 V DC; R
i
≥
150
Ω
o.r. = of reading
Pulse / frequency output, HART:
For custody transfer measurement, two pulse outputs can be operated.
Passive, galvanically isolated, open collector, 30 V DC, 250 mA
• Frequency output:
Full scale frequency 2 to 10000 Hz (f
max
= 12500 Hz), on/off ratio 1:1, pulse width max. 2 s.
In "Phase-shifted pulse outputs" operating mode, the end frequency is limited to a maximum
of 5000 Hz.
• Pulse output:
Pulse value and pulse polarity selectable, pulse width configurable (0.05 to 2000 ms)
Pulse / frequency output, MODBUS RS485:
Active/passive selectable, galvanically isolated
• Active: 24 V DC, 25 mA (max. 250 mA during 20 ms), R
L
> 100
Ω
• Passive: Open Collector, 30 V DC, 250 mA
• Frequency output:
Full scale frequency 2 to 10000 Hz (f
max
= 12500 Hz), on/off ratio 1:1, pulse width max. 2 s.
• Pulse output:
Pulse value and pulse polarity selectable, pulse width configurable (0.05 to 2000 ms)
DN
Mass flow (liquids) Q
min
to Q
max
Smallest measured quantity
[mm]
[kg/min]
[kg]
8
0.1 to 10
0.2
15
0.3 to 40
0.5
25
1.0 to 100
2.0
Max. Pressure = 250 bar resp. 350 bar for high pressure version
